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Finding the Fourth Proportional to 158,625.34, 218,917.08 and 87,019.31

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Solution

The fourth proportional to 158,625.34, 218,917.08 and 87,019.31 is: 120,094.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,625.34 : 218,917.08 = 87,019.31 : x
  2. Step 2: Convert to fraction form
    158,625.34/218,917.08 = 87,019.31/x
  3. Step 3: Cross multiply
    158,625.34x = 218,917.08 × 87,019.31
  4. Step 4: Simplify right side
    158,625.34x = 19,050,013,796.11
  5. Step 5: Solve for x
    x = 19,050,013,796.11/158,625.34
  6. Step 6: Final answer
    x = 120,094.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.